Although it was supposed to appear only at 3.25am this morning, people started arriving at 11pm.
The event, known as a total lunar eclipse, was to have lasted til 5am. It was the longest total lunar eclipse in a decade.
The Moon was red because it was completely in the Earth's shadow. As a result, only red light from the Sun was able to reach the Moon's surface.
The blood moon could be seen by the naked eye and telescopes were not needed.
The last such eclipse was in 2004, and the next will be in 2018.